An Electric Double Protection System for Tower Crane

Abstract

The invention relates to a tower crane electrical dual protection system. The tower crane electrical dual protection system is composed of an electrical control system and a safety monitoring system with electrical limiting and action protecting functions. According to the safety monitoring system, a main loop current mutual inductor, a lifting capacity sensor, a lifting torque sensor, a tower body and tower arm dip angle sensor, a trolley range and hoisting height sensor, a rotation angle sensor, a jacking oil pressure continuous quantity sensor and an information collecting loop are newly added on the basis of the content required to set by gb / t28264-2017, a newly-added information processing part is included and regards the rated lifting torque, the tower body and tower arm dip angle, the trolley range, the hoisting height, the rotation angle, the tower body and tower arm dip angle, the jacking oil pressure and the current sudden change as the electrical limiting and action protecting and monitoring targets, wherein the current sudden change happens when the lifting torque or the lifting capacity or the rotation speed is limited; and an interaction voice service unit meeting theman-machine interaction requirement is additionally arranged.

Description

technical field [0001] The invention relates to an electrical protection system for a tower crane in the electrical field, in particular to an electrical double protection system for a tower crane. Background technique [0002] A tower crane is a construction machine that integrates multiple unsafe factors and sources of danger. During its life span, it involves high-altitude load operations, repeated installation and disassembly, different complex environments on construction sites, as well as installation and dismantling and structural inspection quality, operating overload and The failure of protection and untimely safety inspection will lead to a substantial increase in the probability of hazards being out of control. Although safety measures have been continuously upgraded after frequent accidents and the application of the hoisting machinery safety monitoring and management system required by gb / t28264-2017, there are still If the monitoring is not timely or in place, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the existence of the existing tower crane electrical control system which can only detect the safety state of the relevant limiter under the overrun situation, and the implementation of the restrictive measures of the electrical control system after the overrun, and cannot timely Adjust according to actual requirements or issue early warning defects, and provide a new structure of a tower crane electrical double protection system, the technical problem to be solved is to make it double protection for the parts that are prone to problems in the original electrical control system Setting and process monitoring, timely adjustment or early warning according to the actual situation, so as to ensure that the electrical control system is more safe and reliable, suitable for practical use

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